Question

Each step of a staircase in a building is 90 cm.long,30 cm.wide and 20 cm.high. There are 15such steps from first floor to second floor. Find out the height of that flo

Answer 1

height=20cm

no. of stairs=15

height of the floor=20×15

= 300cm

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Answer 2

height=15cm

20cm high

so 15x20=300cm

that is 3m